Tinting an image is adding the color r,g,b to the original r,g,b value.
Import mojo
Class theimage
Field x:Int
Field y:Int
Field image:Image
Field pixels:Int[]
Field width:Int
Field height:Int
Method New( x:Int,y:Int,
width:Int,
height:Int)
pixels = New Int[width*height]
image = CreateImage(width,height)
Self.x = x
Self.y = y
Self.width = width
Self.height = height
makeimage
image.WritePixels(pixels, 0, 0, width, height, 0)
End Method
Method makeimage()
Seed = 10
For Local i:Int = 0 Until width*height
Local col:Int=Rnd(255)
pixels[i] = argb(col,col,col)
Next
End Method
Method tintimage(r:Int,g:Int,b:Int)
makeimage
For Local i:Int = 0 Until width*height
Local r2:Int = getred(pixels[i])
Local g2:Int = getgreen(pixels[i])
Local b2:Int = getblue(pixels[i])
r2+=r
g2+=g
b2+=b
r2 = Clamp(r2,0,255)
g2 = Clamp(g2,0,255)
b2 = Clamp(b2,0,255)
pixels[i] = argb(r2,g2,b2)
Next
image.WritePixels(pixels, 0, 0, width, height, 0)
End Method
Method draw()
DrawImage image,x,y
End Method
End Class
Global im1:theimage
Global im2:theimage
Class MyGame Extends App
Field tintred:Int = 100
Field tintgreen:Int = 0
Field tintblue:Int = 0
Method OnCreate:Int()
SetUpdateRate(60)
im1 = New theimage(10,20,200,200)
im2 = New theimage(330,20,200,200)
'
' Here we tint the image
'
im2.tintimage(tintred,tintgreen,tintblue)
End Method
Method OnUpdate()
If Rnd(320)<2
DebugLog Millisecs()
Seed = Millisecs()
tintred = Rnd(0,255)
tintgreen = Rnd(0,255)
tintblue = Rnd(0,255)
im2.tintimage(tintred,tintgreen,tintblue)
End If
End Method
Method OnRender:Int()
Cls
im1.draw
im2.draw
SetColor 255,255,255
DrawText "Monkey-X - Tinting a image (pixels).",0,0
DrawText "Red: "+tintred+
" Green: "+tintgreen+
" BLue: "+tintblue,
10,300
SetColor tintred,tintgreen,tintblue
DrawRect 400,300,50,50
End Method
End Class
Function Main:Int()
New MyGame()
End Function
Function argb:Int(r:Int, g:Int, b:Int ,alpha:Int=255)
Return (alpha Shl 24) | (r Shl 16) | (g Shl 8) | b
End Function
Function getred:Int(rgba:Int)
Return((rgba Shr 16) & $FF)
End Function
Function getgreen:Int(rgba:Int)
Return((rgba Shr 8) & $FF)
End Function
Function getblue:Int(rgba:Int)
Return(rgba & $FF)
End Function
Function getalpha:Int(rgba:Int)
Return ((rgba Shr 24) & $FF)
End Function